제출 #1042129

#제출 시각아이디문제언어결과실행 시간메모리
1042129allin27x선물상자 (IOI15_boxes)C++17
100 / 100
453 ms372020 KiB
#include <bits/stdc++.h> using namespace std; #define int long long const int MAXN = 1e7+4; int P[MAXN]; int lans[MAXN]; int rans[MAXN]; int N, K, L; int delivery(signed n, signed k, signed l, signed p[]){ N=n;K=k;L=l;for (int i=0; i<n; i++) P[i] = p[i]; for (int i=0; i<n; i++){ lans[i] += P[i] + min(P[i], L-P[i]); if (i >= k) lans[i] += lans[i-k]; } for (int i=n-1; i>=0; i--){ rans[i] += L-P[i] + min(L-P[i], P[i]); if (i<n-k) rans[i] += rans[i+k]; } int ans = min(lans[n-1], rans[0]); for (int i=1; i<n; i++){ ans = min(ans, lans[i-1] + rans[i]); } return ans; }
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